Furnace-door frame



M mcfi 5?;1925 1,529,193 J. n. LEWIS FURNACE DOOR FRAME Filed March 2a, 1924 3 Sheets-Sheet 1 i 1 E" x i I x i a I Mania 5% 1&25.

' J. D. LEalls FURNACE-DOOR FRAME) Filed March 26, 1924 which "is; 925.

J. LEwzs FURNACE DOOR FRAME Filed Marsh 26, 2 3 Sheets-Sheet 3 ?atented Mar. 10,1925.

outrun srArEs JOHN D. 'LnwIs, or Younesrowu, OHIO.

FURNACEDOOR FRAME.

Application filed March 26, 1924. Serial No. 702,124.

To all whom it may concern:

Be it known that 1, JOHN D. Lnwrs, a citizen'of the United States. andresident of I Youngstown in the county of Mahoning and State of Ohio, have invented certain new and useful Improvements in Furnace- Door Frames, of which the following is a specification.

This invention relates to furnace door frames and more particularlvto door frames primarily designed for use in open-hearth furnaces and the like. and has for one of its objects the provision of an improved door frame formed from standard pipe sections welded together and provided with improved meansior circulating a cooling medium therethrough.

Another object is to provide a novel form of joint between the pipe. sections, whereby a strong and durable joint is provided.

A further object is to provide a door frame having the novel arrangement, construction and design of parts hereinafter described and illustrated in the accompany-.

ing drawings.

JIn the drawings, Figure 1 is an elevation (of a portion of a furnace side wall having a door frame constructed according to myinvention secured therein.

- Figure 2 is a'sectional elevation on the line Il -H of Figure 1.

Figure 3 is a top plan of the door frame.

Figure 4; is an. enlarged detail elevationof the door frame. Figure 5 is an enlarged sectional elevation through one of the upper corners of the frame, showing thedetails of the joint connecting the top and leg members.

Figure 6 is a transverse sectional view taken on the line VI-VI of Figure 5.

Figure 7 is a vertical sectional view taken on the line VII-VII of Figure 5.

Figure 8 is a detail view of the outlet pl 7 e eferring more particularly to the drawings, the numeral 2 designates the furnace wall, which is of standard construction and is provided with the usual doorway 3. The usual buckstays 4 are provided at spaced intervals along the Wall 2-to strengthen and support the same.

The letter A designates the improved.

door frame, embodying this invention, as a whole. The heme A. is movablyheld in.

strong pipe, which are flattened to the deleg members 11 and 12 and the top position in the doorway 3 by means of the angle lugs 5, which have one flange bearing against the side legs of the door frame and their other flange securedto the buckstays 4 by means of-bolts 6 and a yielding locking mechanism comprising spring 7 and-wedge 8.

The frame A comprises a top member 10 and two side leg members'll and-12' The top and side leg members 10. 11 and 12 are formed from standard sections of extra sired shape so as to provide flatside Walls and curved or rounded end walls. The side leg members 11 and 12 have their lower ends closed by a fiat bottom plate 14:, which is welded thereto.

Each of the side leg members 11 and 12 is cut. away adjacent its upper end, forming horizontal and vertical edges 15 and 16 and a miter portion 17, and the ends of the top member 10 are cutaway to. form a miter portion 18 at its lower edge, vertical edges 19 up to a point on a line with the horizontal edges 15 of the side legs, horizontal edges and vertical. edges 20 and 21, respectively, corresponding to the'horizontal and vertical edges 15 and 16 of the side legs, and a miter portion 22 corresponding to theportion 1'?" of the side legs. The cut away end portions of the top and leg membersare forming a butt weld joint, while the end wall of the leg members extends bey'ond'the vertical edges 19 for the depth of the miter 18, and said edges 19 and edge of the miter 18 are welded to the side and end walls of the side legs forming a lap weld joint, and

completing the joint between the members. The lap portion of the joint between the member 10 serves to strengthen the joint and prevent the breaking of the joint by strains or stresses extending in a 'c'lirection transverse to the vertical plane of The frame.

The portion of the end walls of the leg members 11 and 12, which extends within the top member 10 and designated by the numeral is provided with apertures 2'2 to permit the tree circulation of water within the frame.

A combined door guide and reinforcing rib or flange 28 extends along each of the leg members and upwardly over the joint between the leg" members, and the top member 10 to a point beyond the upper face of the top member. The ribs 2-8 are welded to the legmembers 11 and 12' and to the top member 10 and serve as guides for the door and also as a reinforcement for the joint.-

The ribs 28 are provided adjacent their upper ends with openings 29 for the reception of hooks or the like in handling; the assembled frame with a crane or other lifting device.

A suitable water supply pipe 30 enters through the leg ll. adjacent its upper end and extends through the top member 10 to the leg 1.2. The pipe 30 is provided with branches 31 extending downwardly to a point adjacent the lower ends of the legs 7 11 and 12 and terminating in flattened nozzle portions 32 adapted to discharge the water into the legs 11 and 12 at a high speed and in a flattened stream, so as to prevent the building up of sediment at the bottom of the legs 11 and 12. f

A water discharge pipe 33 is "mounted within the top member 10 adjacent its upper face and is provided with an outlet 34. The pipe 33 has-the end opposite its outlet open and is also provided with a plurality of openings 35 along its length to permit the ready outflow of water. thereby causing a continual flow or circulation of water through the frame to cool the same.

The door frame of this invention has several distinct advantages over frames as ordinarily constructed, the joints are all welded and, therefore, are stronger and reanain water-tight longer than other forms of joints, the circulating system is or an improved form, causing a more rapid circulation of the cooling medium. and the frame .being formed. from standard pipe has the advantage of providing comparativelv thin walls of greater strength than is possible in the cast metal frames ordinarilyused.

'Wh'ile only the one specific embodiment of the invention has been described and illustrated in detail, it will be understood that I do not wish to be limited to the specific details of such embodiment, since various modificatioi'is may be made without departing from the scope of mv'invcntion as defined in the appended claims.

I claim l. A furnace door frame comprising a hollow top member and hollow sidc log .mcmbors, said members being formed trom sectioiis of flattened pipe, said leg members and said top member having their abutting ends cutto form complementary step-like ortions, which are abutted and welded to 30in said members, and means for causing a circulation of water through said man bers.

2. A iurnace door frame comprising; a hollow top member and hollow side leg members, said members beina formed from. sections of flattened pipe, said lee; members and said top member having their abutting ends cut to form complementary step-like portions, including a horizontal edge which support-s the weight of thetop member. said sten-likc portions being abutted and welded to join said members.

3. A furnace door frame comprising: a hollow top member and hollow side leg members. said members being formed from {sections of flattened pipe. said leg members and said top member having their abutting ends cut to form complementarv step-like portions, including: a horizontal edge which supports the weight of the top member, said step-like portions being abutted and welded to ioin said members. and combined door guide and reinforcing ribs secured to each of said legs and to said top member and extended across a joint between said members so to reinforce the same.

4. A inrnace door frame comprising a hel low ton inember and hollow side leg members said members being formed from secti ns of flattened pipe. said leg members and said top member having their abutting ends cut to form com'plementarv step-like portions.-

including a horizontal edge which supports the wciqh-t of the too member. said step-like portions being ahutted and-welded to join said members. and combined door guide and reinforcing ribs secured to each of said legs and tosaid top member, and extended across a joint between said members so as to reinforce the same, said ribs projecting above said top member and being provided with suitableholes for the reception of suitable hooks or the like in handlingthe frame.

5. A furnace door frame comprising a hollow top member and hollow side leg memhere. said leg members being welded to said too member and communicating therewith, means for causing a circulation of water through said members, and combined door guide and reinforcing ribs welded to each of said leg members and said top members across the joints between said members.

6. A furnace door frame comprising a hollow top member and hollow side leg:

members. said leg members being: welded to said top member and communicating' therewith. water supply pipes extending down wardlv throng-h each of said leg" members and terminating adiace'nt the lower end of said members in flattened discharge nozzles, which increases the discharge speed of the water, and an outlet within top member and arranged adjacent the upper face thereof.

7. A furnace door frame comprising a hollow top member and hollow side leg members, said leg members being welded to said top member and communicating therewith, water supply pipes extending downwardly through each of said leg members and terminating adjacent the lower end of said members in flattened discharge nozzles, which increases the discharge speed of the water, and an outlet pipe within said top member and arranged adjacent the upper face thereof, said outlet pipe being provided with a plurality of openings to permit the water to flow into said pipe from various points along the length of said top member.

8. As an article of manufacture, a furnace door frame comprising a plurality of tubular-members having their axes extending at substantially 90 degrees to each other, the meeting ends of said members being shaped to butt throughout a portion of their engagement and to lap throughout the other portions of their engagement, said'meeting ends'bcing welded to provide a water-tight conduit.

9. As an article of manufacture, a furnace door frame comprising a plurality of tubular members having their axes extending at substantially 90 degrees to each other,

the meeting ends of said members being shaped to butt throughout a portion oftheir engagement and to lap throughout the other portions of their engagement, said meeting ends being secured together to provide a water-tight conduit.

10. As an article of manufacture, a furnace door frame comprising a plurality of tubular members having their axes extending at substantially 90 degrees to each other, the meeting ends of said members being out along an irregular line so as to provide a stantially vertically.

12. As an article of manufacture, a furnace door frame comp'risirfg a plurality of tubular members having their axes extending at substantially 90 degrees to each other, the meeting ends of said members being out along an irregular line so as to provide a combined butt and lap joint, certain portions of said out ends extending at su'bstantially right angles to other portions thereof.

13. As an article of manufacture, a furnace door frame comprising a plurality of tilbular members having their axes extending at substantially 90 degrees to each other, the meeting ends of said members being out along an irregular line so as to provide a combined butt and lap joint, said butt and lap joints being welded to form a water-tight connection, and a reinforcing rib secured across said joint.

In testimony whereof I have hereunto set my hand.

JOHN D. LEWIS. 

